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  • Title: Silent cerebral infarction is associated with the development and progression of nephropathy in patients with type 2 diabetes.
    Author: Bouchi R, Babazono T, Yoshida N, Nyumura I, Toya K, Hayashi T, Hanai K, Tanaka N, Ishii A, Iwamoto Y.
    Journal: Hypertens Res; 2010 Oct; 33(10):1000-3. PubMed ID: 20613763.
    Abstract:
    Chronic kidney disease (CKD) is an important risk factor for cardiovascular disease in patients with diabetes. The relationship between renal manifestations of CKD (albuminuria and decreased glomerular filtration rate) and silent cerebral infarction (SCI) has attracted attention; however, most studies examined the effects of components of CKD on prevalence of SCI. We sought to assess the relationship between SCI and the development and progression of nephropathy in type 2 diabetic patients. We studied 366 type 2 diabetic patients with normoalbuminuria (urinary albumin-to-creatinine ratio [ACR] <30 mg g(-1), N=246) or microalbuminuria (ACR=30-299 mg g(-1), N=120). SCI was defined by cranial MRI. The primary end point was progression from normo- to microalbuminuria or from micro- to macroalbuminuria. The cumulative incidence of the primary end point was estimated using the Kaplan-Meier method. Risk estimates for reaching the end point were calculated using Cox proportional hazard model analyses. During a median follow-up period of 3.9 years, 23 normoalbuminuric and 24 microalbuminuric patients reached the primary end point. Patients with SCI (N=171) had a greater incidence of reaching the end point than those without SCI (N=195, P=0.020 by the log-rank test), with a hazard ratio of 2.02 (95% confidence interval=1.09-3.72, P=0.025) in the multivariate Cox regression model. Although the common pathogenesis of SCI and albuminuria in diabetic patients is still unclear, SCI may be a predictor of progression of nephropathy in type 2 diabetic patients.
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